mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-23 19:30:05 +00:00
393 lines
14 KiB
C
393 lines
14 KiB
C
/*
|
|
* IFF PBM/ILBM bitmap decoder
|
|
* Copyright (c) 2010 Peter Ross <pross@xvid.org>
|
|
* Copyright (c) 2010 Sebastian Vater <cdgs.basty@googlemail.com>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* IFF PBM/ILBM bitmap decoder
|
|
*/
|
|
|
|
#include "libavutil/imgutils.h"
|
|
#include "bytestream.h"
|
|
#include "avcodec.h"
|
|
#include "get_bits.h"
|
|
|
|
typedef struct {
|
|
AVFrame frame;
|
|
int planesize;
|
|
uint8_t * planebuf;
|
|
int init; // 1 if buffer and palette data already initialized, 0 otherwise
|
|
} IffContext;
|
|
|
|
#define LUT8_PART(plane, v) \
|
|
AV_LE2NE64C(UINT64_C(0x0000000)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x1000000)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x0010000)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x1010000)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x0000100)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x1000100)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x0010100)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x1010100)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x0000001)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x1000001)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x0010001)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x1010001)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x0000101)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x1000101)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x0010101)<<32 | v) << plane, \
|
|
AV_LE2NE64C(UINT64_C(0x1010101)<<32 | v) << plane
|
|
|
|
#define LUT8(plane) { \
|
|
LUT8_PART(plane, 0x0000000), \
|
|
LUT8_PART(plane, 0x1000000), \
|
|
LUT8_PART(plane, 0x0010000), \
|
|
LUT8_PART(plane, 0x1010000), \
|
|
LUT8_PART(plane, 0x0000100), \
|
|
LUT8_PART(plane, 0x1000100), \
|
|
LUT8_PART(plane, 0x0010100), \
|
|
LUT8_PART(plane, 0x1010100), \
|
|
LUT8_PART(plane, 0x0000001), \
|
|
LUT8_PART(plane, 0x1000001), \
|
|
LUT8_PART(plane, 0x0010001), \
|
|
LUT8_PART(plane, 0x1010001), \
|
|
LUT8_PART(plane, 0x0000101), \
|
|
LUT8_PART(plane, 0x1000101), \
|
|
LUT8_PART(plane, 0x0010101), \
|
|
LUT8_PART(plane, 0x1010101), \
|
|
}
|
|
|
|
// 8 planes * 8-bit mask
|
|
static const uint64_t plane8_lut[8][256] = {
|
|
LUT8(0), LUT8(1), LUT8(2), LUT8(3),
|
|
LUT8(4), LUT8(5), LUT8(6), LUT8(7),
|
|
};
|
|
|
|
#define LUT32(plane) { \
|
|
0, 0, 0, 0, \
|
|
0, 0, 0, 1 << plane, \
|
|
0, 0, 1 << plane, 0, \
|
|
0, 0, 1 << plane, 1 << plane, \
|
|
0, 1 << plane, 0, 0, \
|
|
0, 1 << plane, 0, 1 << plane, \
|
|
0, 1 << plane, 1 << plane, 0, \
|
|
0, 1 << plane, 1 << plane, 1 << plane, \
|
|
1 << plane, 0, 0, 0, \
|
|
1 << plane, 0, 0, 1 << plane, \
|
|
1 << plane, 0, 1 << plane, 0, \
|
|
1 << plane, 0, 1 << plane, 1 << plane, \
|
|
1 << plane, 1 << plane, 0, 0, \
|
|
1 << plane, 1 << plane, 0, 1 << plane, \
|
|
1 << plane, 1 << plane, 1 << plane, 0, \
|
|
1 << plane, 1 << plane, 1 << plane, 1 << plane, \
|
|
}
|
|
|
|
// 32 planes * 4-bit mask * 4 lookup tables each
|
|
static const uint32_t plane32_lut[32][16*4] = {
|
|
LUT32( 0), LUT32( 1), LUT32( 2), LUT32( 3),
|
|
LUT32( 4), LUT32( 5), LUT32( 6), LUT32( 7),
|
|
LUT32( 8), LUT32( 9), LUT32(10), LUT32(11),
|
|
LUT32(12), LUT32(13), LUT32(14), LUT32(15),
|
|
LUT32(16), LUT32(17), LUT32(18), LUT32(19),
|
|
LUT32(20), LUT32(21), LUT32(22), LUT32(23),
|
|
LUT32(24), LUT32(25), LUT32(26), LUT32(27),
|
|
LUT32(28), LUT32(29), LUT32(30), LUT32(31),
|
|
};
|
|
|
|
// Gray to RGB, required for palette table of grayscale images with bpp < 8
|
|
static av_always_inline uint32_t gray2rgb(const uint32_t x) {
|
|
return x << 16 | x << 8 | x;
|
|
}
|
|
|
|
/**
|
|
* Convert CMAP buffer (stored in extradata) to lavc palette format
|
|
*/
|
|
static int ff_cmap_read_palette(AVCodecContext *avctx, uint32_t *pal)
|
|
{
|
|
int count, i;
|
|
|
|
if (avctx->bits_per_coded_sample > 8) {
|
|
av_log(avctx, AV_LOG_ERROR, "bit_per_coded_sample > 8 not supported\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
count = 1 << avctx->bits_per_coded_sample;
|
|
// If extradata is smaller than actually needed, fill the remaining with black.
|
|
count = FFMIN(avctx->extradata_size / 3, count);
|
|
if (count) {
|
|
for (i=0; i < count; i++) {
|
|
pal[i] = 0xFF000000 | AV_RB24( avctx->extradata + i*3 );
|
|
}
|
|
} else { // Create gray-scale color palette for bps < 8
|
|
count = 1 << avctx->bits_per_coded_sample;
|
|
|
|
for (i=0; i < count; i++) {
|
|
pal[i] = 0xFF000000 | gray2rgb((i * 255) >> avctx->bits_per_coded_sample);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int decode_init(AVCodecContext *avctx)
|
|
{
|
|
IffContext *s = avctx->priv_data;
|
|
int err;
|
|
|
|
if (avctx->bits_per_coded_sample <= 8) {
|
|
avctx->pix_fmt = (avctx->bits_per_coded_sample < 8 ||
|
|
avctx->extradata_size) ? PIX_FMT_PAL8
|
|
: PIX_FMT_GRAY8;
|
|
} else if (avctx->bits_per_coded_sample <= 32) {
|
|
avctx->pix_fmt = PIX_FMT_BGR32;
|
|
} else {
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if ((err = av_image_check_size(avctx->width, avctx->height, 0, avctx)))
|
|
return err;
|
|
s->planesize = FFALIGN(avctx->width, 16) >> 3; // Align plane size in bits to word-boundary
|
|
s->planebuf = av_malloc(s->planesize + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!s->planebuf)
|
|
return AVERROR(ENOMEM);
|
|
|
|
s->frame.reference = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Decode interleaved plane buffer up to 8bpp
|
|
* @param dst Destination buffer
|
|
* @param buf Source buffer
|
|
* @param buf_size
|
|
* @param plane plane number to decode as
|
|
*/
|
|
static void decodeplane8(uint8_t *dst, const uint8_t *buf, int buf_size, int plane)
|
|
{
|
|
const uint64_t *lut = plane8_lut[plane];
|
|
do {
|
|
uint64_t v = AV_RN64A(dst) | lut[*buf++];
|
|
AV_WN64A(dst, v);
|
|
dst += 8;
|
|
} while (--buf_size);
|
|
}
|
|
|
|
/**
|
|
* Decode interleaved plane buffer up to 24bpp
|
|
* @param dst Destination buffer
|
|
* @param buf Source buffer
|
|
* @param buf_size
|
|
* @param plane plane number to decode as
|
|
*/
|
|
static void decodeplane32(uint32_t *dst, const uint8_t *buf, int buf_size, int plane)
|
|
{
|
|
const uint32_t *lut = plane32_lut[plane];
|
|
do {
|
|
unsigned mask = (*buf >> 2) & ~3;
|
|
dst[0] |= lut[mask++];
|
|
dst[1] |= lut[mask++];
|
|
dst[2] |= lut[mask++];
|
|
dst[3] |= lut[mask];
|
|
mask = (*buf++ << 2) & 0x3F;
|
|
dst[4] |= lut[mask++];
|
|
dst[5] |= lut[mask++];
|
|
dst[6] |= lut[mask++];
|
|
dst[7] |= lut[mask];
|
|
dst += 8;
|
|
} while (--buf_size);
|
|
}
|
|
|
|
/**
|
|
* Decode one complete byterun1 encoded line.
|
|
*
|
|
* @param dst the destination buffer where to store decompressed bitstream
|
|
* @param dst_size the destination plane size in bytes
|
|
* @param buf the source byterun1 compressed bitstream
|
|
* @param buf_end the EOF of source byterun1 compressed bitstream
|
|
* @return number of consumed bytes in byterun1 compressed bitstream
|
|
*/
|
|
static int decode_byterun(uint8_t *dst, int dst_size,
|
|
const uint8_t *buf, const uint8_t *const buf_end) {
|
|
const uint8_t *const buf_start = buf;
|
|
unsigned x;
|
|
for (x = 0; x < dst_size && buf < buf_end;) {
|
|
unsigned length;
|
|
const int8_t value = *buf++;
|
|
if (value >= 0) {
|
|
length = value + 1;
|
|
memcpy(dst + x, buf, FFMIN3(length, dst_size - x, buf_end - buf));
|
|
buf += length;
|
|
} else if (value > -128) {
|
|
length = -value + 1;
|
|
memset(dst + x, *buf++, FFMIN(length, dst_size - x));
|
|
} else { // noop
|
|
continue;
|
|
}
|
|
x += length;
|
|
}
|
|
return buf - buf_start;
|
|
}
|
|
|
|
static int decode_frame_ilbm(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
AVPacket *avpkt)
|
|
{
|
|
IffContext *s = avctx->priv_data;
|
|
const uint8_t *buf = avpkt->data;
|
|
int buf_size = avpkt->size;
|
|
const uint8_t *buf_end = buf+buf_size;
|
|
int y, plane, res;
|
|
|
|
if (s->init) {
|
|
if ((res = avctx->reget_buffer(avctx, &s->frame)) < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
|
|
return res;
|
|
}
|
|
} else if ((res = avctx->get_buffer(avctx, &s->frame)) < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
|
return res;
|
|
} else if (avctx->bits_per_coded_sample <= 8 && avctx->pix_fmt != PIX_FMT_GRAY8) {
|
|
if ((res = ff_cmap_read_palette(avctx, (uint32_t*)s->frame.data[1])) < 0)
|
|
return res;
|
|
}
|
|
s->init = 1;
|
|
|
|
if (avctx->codec_tag == MKTAG('I','L','B','M')) { // interleaved
|
|
if (avctx->pix_fmt == PIX_FMT_PAL8 || avctx->pix_fmt == PIX_FMT_GRAY8) {
|
|
for(y = 0; y < avctx->height; y++ ) {
|
|
uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
|
|
memset(row, 0, avctx->width);
|
|
for (plane = 0; plane < avctx->bits_per_coded_sample && buf < buf_end; plane++) {
|
|
decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane);
|
|
buf += s->planesize;
|
|
}
|
|
}
|
|
} else { // PIX_FMT_BGR32
|
|
for(y = 0; y < avctx->height; y++ ) {
|
|
uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
|
|
memset(row, 0, avctx->width << 2);
|
|
for (plane = 0; plane < avctx->bits_per_coded_sample && buf < buf_end; plane++) {
|
|
decodeplane32((uint32_t *) row, buf, FFMIN(s->planesize, buf_end - buf), plane);
|
|
buf += s->planesize;
|
|
}
|
|
}
|
|
}
|
|
} else if (avctx->pix_fmt == PIX_FMT_PAL8 || avctx->pix_fmt == PIX_FMT_GRAY8) { // IFF-PBM
|
|
for(y = 0; y < avctx->height; y++ ) {
|
|
uint8_t *row = &s->frame.data[0][y * s->frame.linesize[0]];
|
|
memcpy(row, buf, FFMIN(avctx->width, buf_end - buf));
|
|
buf += avctx->width + (avctx->width % 2); // padding if odd
|
|
}
|
|
}
|
|
|
|
*data_size = sizeof(AVFrame);
|
|
*(AVFrame*)data = s->frame;
|
|
return buf_size;
|
|
}
|
|
|
|
static int decode_frame_byterun1(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
AVPacket *avpkt)
|
|
{
|
|
IffContext *s = avctx->priv_data;
|
|
const uint8_t *buf = avpkt->data;
|
|
int buf_size = avpkt->size;
|
|
const uint8_t *buf_end = buf+buf_size;
|
|
int y, plane, res;
|
|
|
|
if (s->init) {
|
|
if ((res = avctx->reget_buffer(avctx, &s->frame)) < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
|
|
return res;
|
|
}
|
|
} else if ((res = avctx->get_buffer(avctx, &s->frame)) < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
|
return res;
|
|
} else if (avctx->bits_per_coded_sample <= 8 && avctx->pix_fmt != PIX_FMT_GRAY8) {
|
|
if ((res = ff_cmap_read_palette(avctx, (uint32_t*)s->frame.data[1])) < 0)
|
|
return res;
|
|
}
|
|
s->init = 1;
|
|
|
|
if (avctx->codec_tag == MKTAG('I','L','B','M')) { //interleaved
|
|
if (avctx->pix_fmt == PIX_FMT_PAL8 || avctx->pix_fmt == PIX_FMT_GRAY8) {
|
|
for(y = 0; y < avctx->height ; y++ ) {
|
|
uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
|
|
memset(row, 0, avctx->width);
|
|
for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) {
|
|
buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end);
|
|
decodeplane8(row, s->planebuf, s->planesize, plane);
|
|
}
|
|
}
|
|
} else { //PIX_FMT_BGR32
|
|
for(y = 0; y < avctx->height ; y++ ) {
|
|
uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
|
|
memset(row, 0, avctx->width << 2);
|
|
for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) {
|
|
buf += decode_byterun(s->planebuf, s->planesize, buf, buf_end);
|
|
decodeplane32((uint32_t *) row, s->planebuf, s->planesize, plane);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
for(y = 0; y < avctx->height ; y++ ) {
|
|
uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
|
|
buf += decode_byterun(row, avctx->width, buf, buf_end);
|
|
}
|
|
}
|
|
|
|
*data_size = sizeof(AVFrame);
|
|
*(AVFrame*)data = s->frame;
|
|
return buf_size;
|
|
}
|
|
|
|
static av_cold int decode_end(AVCodecContext *avctx)
|
|
{
|
|
IffContext *s = avctx->priv_data;
|
|
if (s->frame.data[0])
|
|
avctx->release_buffer(avctx, &s->frame);
|
|
av_freep(&s->planebuf);
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_iff_ilbm_decoder = {
|
|
.name = "iff_ilbm",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = CODEC_ID_IFF_ILBM,
|
|
.priv_data_size = sizeof(IffContext),
|
|
.init = decode_init,
|
|
.close = decode_end,
|
|
.decode = decode_frame_ilbm,
|
|
.capabilities = CODEC_CAP_DR1,
|
|
.long_name = NULL_IF_CONFIG_SMALL("IFF ILBM"),
|
|
};
|
|
|
|
AVCodec ff_iff_byterun1_decoder = {
|
|
.name = "iff_byterun1",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = CODEC_ID_IFF_BYTERUN1,
|
|
.priv_data_size = sizeof(IffContext),
|
|
.init = decode_init,
|
|
.close = decode_end,
|
|
.decode = decode_frame_byterun1,
|
|
.capabilities = CODEC_CAP_DR1,
|
|
.long_name = NULL_IF_CONFIG_SMALL("IFF ByteRun1"),
|
|
};
|